tests: remove disk-drive-fat test

This test requests a read-only virtual FAT drive on the IDE bus.
Read-only IDE drives are unsupported, but libvirt only displays
the error if it has the QEMU_CAPS_DRIVE_READONLY capability.
Read-write FAT drives are also unsupported.

tests/qemuxml2argvdata/qemuxml2argv-disk-drive-fat.args

-LC_ALL=C \
-PATH=/bin \
-HOME=/home/test \
-USER=test \
-LOGNAME=test \
-QEMU_AUDIO_DRV=none \
-/usr/bin/qemu \
--name QEMUGuest1 \
--S \
--M pc \
--m 214 \
--smp 1 \
--uuid c7a5fdbd-edaf-9455-926a-d65c16db1809 \
--nographic \
--nodefaults \
--monitor unix:/tmp/lib/domain--1-QEMUGuest1/monitor.sock,server,nowait \
--no-acpi \
--boot c \
--usb \
--drive file=fat:/var/somefiles,if=none,id=drive-ide0-0-0 \
--device ide-drive,bus=ide.0,unit=0,drive=drive-ide0-0-0,id=ide0-0-0 \
--device virtio-balloon-pci,id=balloon0,bus=pci.0,addr=0x3

tests/qemuxml2argvdata/qemuxml2argv-disk-drive-fat.xml

-<domain type='qemu'>
-  <name>QEMUGuest1</name>
-  <uuid>c7a5fdbd-edaf-9455-926a-d65c16db1809</uuid>
-  <memory unit='KiB'>219136</memory>
-  <currentMemory unit='KiB'>219136</currentMemory>
-  <vcpu placement='static'>1</vcpu>
-  <os>
-    <type arch='i686' machine='pc'>hvm</type>
-    <boot dev='hd'/>
-  </os>
-  <clock offset='utc'/>
-  <on_poweroff>destroy</on_poweroff>
-  <on_reboot>restart</on_reboot>
-  <on_crash>destroy</on_crash>
-  <devices>
-    <emulator>/usr/bin/qemu</emulator>
-    <disk type='dir' device='disk'>
-      <driver name='qemu' type='fat'/>
-      <source dir='/var/somefiles'/>
-      <target dev='hda' bus='ide'/>
-      <readonly/>
-      <address type='drive' controller='0' bus='0' target='0' unit='0'/>
-    </disk>
-    <controller type='usb' index='0'/>
-    <controller type='ide' index='0'/>
-    <controller type='pci' index='0' model='pci-root'/>
-    <input type='mouse' bus='ps2'/>
-    <input type='keyboard' bus='ps2'/>
-    <memballoon model='virtio'/>
-  </devices>
-</domain>

tests/qemuxml2argvtest.c

@@ -758,8 +758,6 @@ mymain(void)
             QEMU_CAPS_DRIVE_BOOT);
     DO_TEST("floppy-drive-fat",
             QEMU_CAPS_DRIVE_BOOT);
-    DO_TEST("disk-drive-fat",
-            QEMU_CAPS_DRIVE_BOOT);
     DO_TEST("disk-drive-readonly-disk",
             QEMU_CAPS_DRIVE_READONLY,
             QEMU_CAPS_NODEFCONFIG);

tests/qemuxml2xmltest.c

@@ -375,7 +375,6 @@ mymain(void)
     DO_TEST("disk-drive-error-policy-stop");
     DO_TEST("disk-drive-error-policy-enospace");
     DO_TEST("disk-drive-error-policy-wreport-rignore");
-    DO_TEST("disk-drive-fat");
     DO_TEST("disk-drive-fmt-qcow");
     DO_TEST("disk-drive-copy-on-read");
     DO_TEST("disk-drive-cache-v2-wt");